Alfred george browning



A. BROWNING.V

PUMP 0R THE LIKE.

4APkLICATlON FILED NOV. 13.1919.- 1,842,087. Patented June 1, 1920.

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UNITED STATES PATENT OFFICE.

PUMP OR THE LIKE.

Application led November 13, 1919.

To all whom 'it may concern:

Be it known that I, ALFRED GEORGE BROWNING, a subject of the King of England, residing at South Norwood, London, England, havey invented certain new and useful Improvements in Pumps or the like, of which the following is a specification.

This invention is for improvements in or relating to pumps or the like and has for one of its objects to provide an improved construction of piston or bucket pump wherein the sealing of the bucket is more effective than hitherto.

The primary feature of the present invention consists in the combination with a piston and cylinder of projections on both such parts, each encircling the axis of the cylinder, one set of `projections overlapping and sliding in the other set during the relative reciprocation of piston and cylinder. Conveniently one or more relief valves communicating with the spaces between the projections are provided with the object of relieving them of any excessive pressure due to air or other fluid being trapped therein during the compression stroke. One or more lubricant ducts are also preferably provided communicating with the spaces between the projections so that lubricant may be introduced thereto.

According to another feature of the in-` vention the piston has a `conduit there, .y

Specification of Letters Patent.

Patented June 1, 1920.

Serial No. 337,761.

this description is given by way of example only and that the consti-notional details enumerated may be modified in many respects without departing from the spirit and scope of the invention.

In the accompanying drawings Figure l is any elevation of the pump partly in section, and

Fig. 2 isa fragmentary section on the line 2 2 of Fig. l'on a larger scale than the latter.

Like letters of reference indicate like parts throughout the drawings.

The pump comprises a framework or casing A into which the various detail parts of the pump are built. Two cylinders B and C are mounted side by side and parallel to each other, their interiors being connected at the lower ends by conduits D to an intake aperture E fitted with a valve seat E1 and valve EZ whereof the stem E3 is housed in a suitable guideway E1 and normally pressed downward by a spring E5. This valve E2 will operate to maintain a ce1'- tain amount of the `fluid always in the pump even though the latter be not operating at the moment. At their upper ends the cylinders are connected by conduits F to a delivery -pipe G into which opens an aircushion chamber H which will operate to prevent undue shocks.

l, At their lower ends the cylinders are prothrough controlled at each end by a valvejvided with annular projections J leaving one valve being mounted with its stem to"l between them annular spaces or channels to slide in the piston or piston rod and having, 1 yjwhich lubricant may be introduced through a projection in or on which the stem of theigtthe ducts J1 by removing the screws J 2. second valve is mounted to slide, such pro-,1.`C `jVithin the Cylinders B and C are buckets jection serving as the sole guiding means'lj'jor pistons B1 and C1 respectively having for the stem of the second valve. By this means an unobstructed throughway is proto cranks B4, C4 upon a main driving shaft vided. Conveniently, the valves, the valvej` 51K. the cranks B4, C4 being set at an angle seatings, or both, have their faces of extend- "lof 180o relatively to each other. Tn Fig. l ed dimensions to guide the valves into opboth cranks are shown as horizontal, the

piston rods B2, C2 connected by rods B3, C

erative position. ficrank B4v projecting kforwardly and the rcrank C4 projecting rearwardly. The pisrtons B1 and C1 are each provided with annular projections L` which overlap and slide in the projections J during the reciprocation of the pistons, being a good lit therewith. The projections L forms spaces or channels which are provided with one or more relief valves L1 communicating, say through conduitsv L2, with each such space or channel. The valves L1 are preferably spring-loaded and serve to relieve any excessive pressure According to a further feature of the invention two cylinders mounted side by side@ are connected together at one end to a sin? gle intake conduit and at the other end to a single delivery conduit, the latter preferably including anair-cushion chamber opening into it. y

For a morecomplete understanding of the invention there will now be described one constructional form of pump according to the invention. It is to be understood that set up in the spaces with which they are connected. llt will be seen that ty reason oic the inter-enfac'ing projiections on the piston and cylinder end iluid compressed by the inoveinent of the piston cnn onli past the latter., when t piston v2 "y inafter described are shuthy lahyrinthine pezh up and down the sides of the ennular projectie. preventing; leal: y e pest 'nic p to he more etlicienU than prcfidino` rings in the outer circun -Y ton.

The pistons ere each ihnovidod with a tue loular velye seating` FioriniA f' a con duit through the piston. Coi'iorating with the valve seating is a valve B2 @C nf'hereot the stein is housed to slide in piston or piston rod. rlfhese valves :ire each provided with a projection B7 C7 in or on i-,vhich the stein BS CS of snot-her volvo C9 mounted to slide. Sleat' T :D1 are piovided for the valves B9 @9 and it will he seen th the valves B9 C and the sen i y19 and also the ".f'elvcs C have tl cir tacos of f tended dimensions to ruine the valves into operative position. This precaution is prefn enable since the priijections @Y 'z'forni the sole guiding' ineans for the steine of the Valves B9 C. it will he seen that the construction just described provides unobstructed path 'for fluid throi the piston when the valves lg CG are ope The parts are shown in ip; l being` in the position in which the piston B1 is inidway through its upscioke while the piston C1 is inidway through its downstrolm. in moving upward the piston will l the water or other fluid shove Y A the pressure of which the valve shut.

@ii/ing to the pressure liolow the Y being thus reduced., water or the conduit D will force the vo end into the space between and BG. @n the downstiole of the pis the pressure on the valve will close it and :torce open the valve B2 the water or other :liuid passing above the letter into posit-ion to he lifted during) the next upstrole of the piston. The operations of the piston @l and its valves are, of course, precisely the saine but differently timed.

rEhe invention has the :ulvant e oit sun plicity and cheapness oit tion :ind the puinp can he run et e very lnoh speed without reduction in the eiiciency. tiny desired number of projections J ond il inay he employed according` to the particular circumstances in which the puinp is to he used. Also, while the construction iilustrated in the drawings is inore particularly applicable for pumpingwater or other liquids, it will be understood the invention nia-y also be applied to puinps or ei;- hausters for air or other gases llfhat ll claiin as iny invention and desire to secure by Letters Patent i l, ln a punip or the like the combination with a piston and cylinder of' projections on loot-h such parts each encirclingV the axis of the cylinder, one set of projections overlap ping; and sliding` in the other dining the relative reciprocation oi piston and cylinder and relief valves conuniniicating,r with the spaces 1between the projections, toi the purpose specii'ied.,

2. ln a puinp or the like the combination with a piston and cyl r ol projections on hoth such parts each encircling; the anis o the cylinder, one set olf projections overlepping and sliding in the other set duiA g 'the relative recipro ion oli piston and cylinder and a relief valve communicating with each of the spaces hetwecn the projections, for the purpose specified El. ln a pump or the like the combination with a piston and cylinderloi projections on both such paif's, each encircling` the anis oit the cylinder, one set of projections overlap- )i c' and slidingl in the other set during` the :e ive reciprocate-ion of piston and cylinder and lubricant ducts communicating 'with the spaces between the piojectionsD for the purpose specified.

1l. ln a puinp or the like vith a piston and cylinder of projections on hoth such parts each encirclingI the anis oi'f the cylinder, one set of projections overlapping' and sliding` in the other set during; the relative reciprocation of piston and cylinder and a lubricant duct communicating with each oil? the spaces between the projections -For the purpose specii'ied.

5. ln a punip or the like the combination with a piston and cylinder ci' projections hoth such parts each encircling' 'the anis t le cylinder7 one set ot projections overj ping; and sliding; in the other set during f ie relative reciprocation of piston and cyl inder, a conduit through the pistone a valve controlling` each end of such conduit and stenis on said valves, one 'valve losing` inounted with its stein to slide in the piston and l aving a projection relatively to which the stein of the second valve slides, such projection serving' as the sole ogniding;n means ier the stein of the second valve, for the purpose specified.

ln a pninp or the like the combination with a piston and cylinder ot projections on both such )arts each encircling` the anis of the cylinder, one sot ot projections overlapping; and sliding in the other set during` the relative reciprocation et piston and cylin dei'D a conduit through the piston` a valve controlling` each end of such conduit such valves having their operative faces ot ez;- tended dimensions to guide the valves into operative position end stems on said valvesj one valve being mounted with its stein to SPO lll)

slide in the piston and having a projection relatively to which the stem of the second valve slides, such projection serving as the sole guiding means for the stem of the second valve, for the purpose specified.

7 In a pump or the like the combination with a piston and cylinder of projections on both such parts each encircling the axis of the cylinder, one set of projections overlapping and sliding in the other set during the relative reciprocation of piston and cylinder, a conduit through the piston, a valve controlling each end of such conduit, valve seatings for the valves, such seatings having their operative faces of extended dimensions to guide the valve into operative position and stems on said valves, one valve being mounted with its stem to slide in the piston.

and having a projection relatively to which the stem of the second valve slides, such projection serving as the sole guiding means for the stem of the second valve, for the purpose specified.

8. In a pump or the like the combination with a piston and cylinder of projections on both such parts each encircling the axis of the cylinder, one set of projections overlapping and sliding in the other set during the relative reciprocation of piston and cylinder, a conduit through the piston, a valve controlling each end of such conduit, such valves having their operative faces of extended dimensions to guide the valves into operative position, valve seatings for the valves, such seatings having their operative faces also of extended dimensions to guide the valves into the operative position and stems on said valves, one valve being mounted with its stem to slide in the piston and having a projection relatively to which the stem of the second valve slides, such projection serving as the sole guiding means for the stem of the second valve, for the purpose specified.

9. A pump or the like comprising in combination two cylinders mounted side by side, a single intake conduit connected to one end of both cylinders, a single delivery conduit connected to the other end of both cylinders, a piston in each cylinder, coperating sets of projections oneach related piston and cylinder, such projections each encircling an axis of a cylinder, and in each related piston and cylinder one set of projections overlapping and sliding in the other set during the relative reciprocation of piston and cylinder, and relief valves communicating with the spaces between the projections for the purpose specified.

10. A pump or the like comprising in combination two cylinders mounted side by side, a single intake conduit connected to one end of both cylinders, a single delivery conduit connected to the other end of both cylinders, an air-cushion chamber opening into the delivery conduit, a piston in each cylinder, cooperating sets of projections on each related piston and cylinder, such projections each encircling an axis of a cylinder, and in each related piston and cylinder one set of projections overlapping and sliding in the other set during the relative reciprocation of piston and cylinder, and relief valves communicating with the spaces between the projections for the purpose specified.

11. A pump or the like comprising in combination two cylinders mounted side by side, a single intake conduit connected to one end of both cylinders, a non-return valve in such intake, a single delivery conduit connected to the other end of both cylinders, an air-cushion chamber opening into the delivery conduit, a piston in each cylinder, coperating sets of projections on each related piston and cylinder', such projections each encircling an axis of a cylinder, and in each related piston and cylinder one set of projections overlapping and sliding in the other set during the relative reciprocation of piston and cylinder, and relief valves communicating with the spaces between the projections for the purpose specified.

12. A pump or the like comprising in combination two cylinders mounted side by side, a single intake conduit connected to one end of both cylinders, a non-return valve in such intake having its operative faces of extended dimensions to guide it into operative position, a single delivery conduit connected to the other end of both cylinders, an air-cushion chamber opening into the delivery conduit, a piston in each cylinder, coperating sets of projections on each related piston and cylinder, such projections each encircling an axis of a cylinder, and in each related piston and cylinder one set of projections overlapping and` sliding in the other set during the relative reciprocation of piston and cylinder, and relief valves communicatin with the spaces between the projections or the purpose specified.

In testimony whereof I ailix mv signature. i

ALFRED GEORGE BRo'wNING. 

